The basic idea is to make a magnet float by holding it up withthe repelling force from another magnet. Magnets can repel each other with enough force. Having enough force to levitate it isn't the problem. ... The floating magnet tends to rotate around, flipping itself to attract to the ...
If you've read How Electromagnets Work, you know that an electrical current moving through a wire creates a magnetic field. Moving electrical charges are responsible for the magnetic field in permanent magnets as well. But a magnet's field doesn't come from a large current traveling through ...
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How Odometers Work How Fuel Gauges Work How Gear Ratios Work How Car Computers Work How does a speedometer in an airplane work? How Magnets Work Sources “100 Years of Speedometers — The History of Driver Information,” November 7, 2002. Found online at: http://www.siemensvdo.com/press...
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How Magnets Work Is it possible to generate electricity directly from heat? Why is it that some appliance plugs have three prongs and others have only two? Are fluorescent bulbs really more efficient than normal light bulbs? More Great Links Theater of Electricity ElectricityForum.com U.S. DOE...
As the drying continues, the polyisoprene strands stick together by forming electrostatic bonds, much like the attraction between opposite poles of two bar magnets. The attraction between these strands holds the rubber fibers together and allows them to stretch and to recover. However, temperature ...
He was also the first to discover that magnets have poles, or individual points where the charge is focused. And, important for electromagnetism, Maxwell observed that when a current passes through a wire, it generates a magnetic field around the wire. Hans Christian Oersted Maxwell's work was...
If you have a positive electrical charge and a negative electrical charge, they attract one another like the opposite poles of two magnets—or like your body and Earth. If you pull them apart, you have to "do work" against this electrostatic force. Again, just like with climbing steps, ...
Electromagnets are especially useful when they're placed on an axis between two stationary magnets. If the electromagnet's south pole is situated against the south pole of one stationarymagnetand its north pole against the north pole of the other stationary magnet, the electromagnet will rotate unt...